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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/net/net_error_tab_helper.h"
#include <memory>
#include "base/memory/raw_ptr.h"
#include "chrome/test/base/chrome_render_view_host_test_harness.h"
#include "components/error_page/common/net_error_info.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/test/mock_navigation_handle.h"
#include "content/public/test/navigation_simulator.h"
#include "content/public/test/test_renderer_host.h"
#include "net/base/net_errors.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/base/page_transition_types.h"
#include "url/gurl.h"
#undef NO_ERROR // Defined in winerror.h.
using chrome_browser_net::NetErrorTabHelper;
using error_page::DnsProbeStatus;
class TestNetErrorTabHelper : public NetErrorTabHelper {
public:
explicit TestNetErrorTabHelper(content::WebContents* web_contents)
: NetErrorTabHelper(web_contents),
mock_probe_running_(false),
last_status_sent_(error_page::DNS_PROBE_MAX),
mock_sent_count_(0),
#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
times_download_page_later_invoked_(0),
#endif // BUILDFLAG(ENABLE_OFFLINE_PAGES)
times_diagnostics_dialog_invoked_(0) {
}
void FinishProbe(DnsProbeStatus status) {
EXPECT_TRUE(mock_probe_running_);
OnDnsProbeFinished(status);
mock_probe_running_ = false;
}
bool mock_probe_running() const { return mock_probe_running_; }
DnsProbeStatus last_status_sent() const { return last_status_sent_; }
int mock_sent_count() const { return mock_sent_count_; }
#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
using NetErrorTabHelper::DownloadPageLater;
const GURL& download_page_later_url() const {
return download_page_later_url_;
}
int times_download_page_later_invoked() const {
return times_download_page_later_invoked_;
}
#endif // BUILDFLAG(ENABLE_OFFLINE_PAGES)
const std::string& network_diagnostics_url() const {
return network_diagnostics_url_;
}
int times_diagnostics_dialog_invoked() const {
return times_diagnostics_dialog_invoked_;
}
void SetCurrentTargetFrame(content::RenderFrameHost* render_frame_host) {
network_diagnostics_receivers_for_testing().SetCurrentTargetFrameForTesting(
render_frame_host);
}
chrome::mojom::NetworkDiagnostics* network_diagnostics_interface() {
return this;
}
private:
// NetErrorTabHelper implementation:
void StartDnsProbe() override {
EXPECT_FALSE(mock_probe_running_);
mock_probe_running_ = true;
}
void SendInfo() override {
last_status_sent_ = dns_probe_status();
mock_sent_count_++;
}
void RunNetworkDiagnosticsHelper(const std::string& sanitized_url) override {
network_diagnostics_url_ = sanitized_url;
times_diagnostics_dialog_invoked_++;
}
#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
void DownloadPageLaterHelper(const GURL& url) override {
download_page_later_url_ = url;
times_download_page_later_invoked_++;
}
#endif // BUILDFLAG(ENABLE_OFFLINE_PAGES)
bool mock_probe_running_;
DnsProbeStatus last_status_sent_;
int mock_sent_count_;
#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
GURL download_page_later_url_;
int times_download_page_later_invoked_;
#endif // BUILDFLAG(ENABLE_OFFLINE_PAGES)
std::string network_diagnostics_url_;
int times_diagnostics_dialog_invoked_;
};
class NetErrorTabHelperTest : public ChromeRenderViewHostTestHarness {
protected:
enum MainFrame { SUB_FRAME, MAIN_FRAME };
enum ErrorType { DNS_ERROR, OTHER_ERROR, NO_ERROR };
void SetUp() override {
ChromeRenderViewHostTestHarness::SetUp();
// This will simulate the initialization of the RenderFrame in the renderer
// process. This is needed because WebContents does not initialize a
// RenderFrame on construction, and the tests expect one to exist.
content::RenderFrameHostTester::For(main_rfh())
->InitializeRenderFrameIfNeeded();
subframe_ = content::RenderFrameHostTester::For(main_rfh())
->AppendChild("subframe");
tab_helper_ = std::make_unique<TestNetErrorTabHelper>(web_contents());
NetErrorTabHelper::set_state_for_testing(
NetErrorTabHelper::TESTING_FORCE_ENABLED);
}
void TearDown() override {
// Have to shut down the helper before the profile.
tab_helper_.reset();
ChromeRenderViewHostTestHarness::TearDown();
}
void DidFinishNavigation(MainFrame main_frame,
ErrorType error_type) {
net::Error net_error = net::OK;
if (error_type == DNS_ERROR)
net_error = net::ERR_NAME_NOT_RESOLVED;
else
net_error = net::ERR_TIMED_OUT;
content::MockNavigationHandle navigation_handle(
bogus_url_, (main_frame == MAIN_FRAME) ? main_rfh() : subframe_.get());
navigation_handle.set_is_in_primary_main_frame(main_frame == MAIN_FRAME);
navigation_handle.set_net_error_code(net_error);
navigation_handle.set_has_committed(true);
navigation_handle.set_is_error_page(true);
tab_helper_->DidFinishNavigation(&navigation_handle);
}
void FinishProbe(DnsProbeStatus status) { tab_helper_->FinishProbe(status); }
void LoadURL(const GURL& url, bool succeeded) {
if (succeeded) {
content::NavigationSimulator::NavigateAndCommitFromBrowser(web_contents(),
url);
} else {
content::NavigationSimulator::NavigateAndFailFromBrowser(
web_contents(), url, net::ERR_TIMED_OUT);
}
}
#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
void NoDownloadPageLaterForNonHttpSchemes(const char* url_string,
bool succeeded) {
GURL url(url_string);
LoadURL(url, succeeded);
tab_helper()->DownloadPageLater();
EXPECT_EQ(0, tab_helper()->times_download_page_later_invoked());
}
#endif // BUILDFLAG(ENABLE_OFFLINE_PAGES)
bool probe_running() { return tab_helper_->mock_probe_running(); }
DnsProbeStatus last_status_sent() { return tab_helper_->last_status_sent(); }
int sent_count() { return tab_helper_->mock_sent_count(); }
TestNetErrorTabHelper* tab_helper() { return tab_helper_.get(); }
private:
raw_ptr<content::RenderFrameHost, DanglingUntriaged> subframe_;
std::unique_ptr<TestNetErrorTabHelper> tab_helper_;
GURL bogus_url_;
};
TEST_F(NetErrorTabHelperTest, Null) {
EXPECT_FALSE(probe_running());
}
TEST_F(NetErrorTabHelperTest, MainFrameNonDnsError) {
DidFinishNavigation(MAIN_FRAME, OTHER_ERROR);
EXPECT_FALSE(probe_running());
EXPECT_EQ(0, sent_count());
}
TEST_F(NetErrorTabHelperTest, NonMainFrameDnsError) {
DidFinishNavigation(SUB_FRAME, DNS_ERROR);
EXPECT_FALSE(probe_running());
EXPECT_EQ(0, sent_count());
}
// Test complete DNS error page loads. Note that the helper can see two error
// page loads: Link Doctor loads an empty HTML page so the user knows something
// is going on, then fails over to the normal error page if and when Link
// Doctor fails to load or declines to provide a page.
TEST_F(NetErrorTabHelperTest, ProbeResponse) {
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(1, sent_count());
FinishProbe(error_page::DNS_PROBE_FINISHED_NXDOMAIN);
EXPECT_FALSE(probe_running());
EXPECT_EQ(2, sent_count());
DidFinishNavigation(MAIN_FRAME, NO_ERROR);
EXPECT_FALSE(probe_running());
EXPECT_EQ(3, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_FINISHED_NXDOMAIN, last_status_sent());
}
// Send result even if a new page load has started; the error page is still
// visible, and the user might cancel the load.
TEST_F(NetErrorTabHelperTest, ProbeResponseAfterNewStart) {
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(1, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_STARTED, last_status_sent());
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(2, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_STARTED, last_status_sent());
DidFinishNavigation(MAIN_FRAME, NO_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(3, sent_count());
FinishProbe(error_page::DNS_PROBE_FINISHED_NXDOMAIN);
EXPECT_FALSE(probe_running());
EXPECT_EQ(4, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_FINISHED_NXDOMAIN, last_status_sent());
}
// Don't send result if a new page has committed; the result would go to the
// wrong page, and the error page is gone anyway.
TEST_F(NetErrorTabHelperTest, ProbeResponseAfterNewCommit) {
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(1, sent_count());
DidFinishNavigation(MAIN_FRAME, NO_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(2, sent_count());
FinishProbe(error_page::DNS_PROBE_FINISHED_NXDOMAIN);
EXPECT_FALSE(probe_running());
EXPECT_EQ(3, sent_count());
}
TEST_F(NetErrorTabHelperTest, MultipleDnsErrorsWithProbesWithoutErrorPages) {
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(1, sent_count());
FinishProbe(error_page::DNS_PROBE_FINISHED_NXDOMAIN);
EXPECT_FALSE(probe_running());
EXPECT_EQ(2, sent_count());
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(3, sent_count());
FinishProbe(error_page::DNS_PROBE_FINISHED_NO_INTERNET);
EXPECT_FALSE(probe_running());
EXPECT_EQ(4, sent_count());
}
TEST_F(NetErrorTabHelperTest, MultipleDnsErrorsWithProbesAndErrorPages) {
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(1, sent_count());
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(2, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_STARTED, last_status_sent());
FinishProbe(error_page::DNS_PROBE_FINISHED_NXDOMAIN);
EXPECT_FALSE(probe_running());
EXPECT_EQ(3, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_FINISHED_NXDOMAIN, last_status_sent());
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(4, sent_count());
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(5, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_STARTED, last_status_sent());
FinishProbe(error_page::DNS_PROBE_FINISHED_NO_INTERNET);
EXPECT_FALSE(probe_running());
EXPECT_EQ(6, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_FINISHED_NO_INTERNET,
last_status_sent());
}
// If multiple DNS errors occur in a row before a probe result, don't start
// multiple probes.
TEST_F(NetErrorTabHelperTest, CoalesceFailures) {
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(2, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_STARTED, last_status_sent());
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(3, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_STARTED, last_status_sent());
DidFinishNavigation(MAIN_FRAME, DNS_ERROR);
EXPECT_TRUE(probe_running());
EXPECT_EQ(4, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_STARTED, last_status_sent());
FinishProbe(error_page::DNS_PROBE_FINISHED_NXDOMAIN);
EXPECT_FALSE(probe_running());
EXPECT_EQ(5, sent_count());
EXPECT_EQ(error_page::DNS_PROBE_FINISHED_NXDOMAIN, last_status_sent());
}
// Makes sure that URLs are sanitized before running the platform network
// diagnostics tool.
TEST_F(NetErrorTabHelperTest, SanitizeDiagnosticsUrl) {
tab_helper()->SetCurrentTargetFrame(web_contents()->GetPrimaryMainFrame());
tab_helper()->network_diagnostics_interface()->RunNetworkDiagnostics(
GURL("http://foo:bar@somewhere:123/hats?for#goats"));
EXPECT_EQ("http://somewhere:123/",
tab_helper()->network_diagnostics_url());
EXPECT_EQ(1, tab_helper()->times_diagnostics_dialog_invoked());
}
// Makes sure that diagnostics aren't run on invalid URLs or URLs with
// non-HTTP/HTTPS schemes.
TEST_F(NetErrorTabHelperTest, NoDiagnosticsForNonHttpSchemes) {
const char* kUrls[] = {
"",
"http",
"file:///blah/blah",
"chrome://blah/",
"about:blank",
"file://foo/bar",
};
for (const char* url : kUrls) {
tab_helper()->SetCurrentTargetFrame(web_contents()->GetPrimaryMainFrame());
tab_helper()->network_diagnostics_interface()
->RunNetworkDiagnostics(GURL(url));
EXPECT_EQ(0, tab_helper()->times_diagnostics_dialog_invoked());
}
}
#if BUILDFLAG(ENABLE_OFFLINE_PAGES)
TEST_F(NetErrorTabHelperTest, DownloadPageLater) {
GURL url("http://somewhere:123/");
LoadURL(url, false /*succeeded*/);
tab_helper()->DownloadPageLater();
EXPECT_EQ(url, tab_helper()->download_page_later_url());
EXPECT_EQ(1, tab_helper()->times_download_page_later_invoked());
}
TEST_F(NetErrorTabHelperTest, NoDownloadPageLaterOnNonErrorPage) {
GURL url("http://somewhere:123/");
LoadURL(url, true /*succeeded*/);
tab_helper()->DownloadPageLater();
EXPECT_EQ(0, tab_helper()->times_download_page_later_invoked());
}
// Makes sure that "Download page later" isn't run on URLs with non-HTTP/HTTPS
// schemes.
// NOTE: the test harness code in this file and in TestRendererHost don't always
// deal with pending RFH correctly. This works because most tests only load
// once. So workaround it by puting each test case in a separate test.
TEST_F(NetErrorTabHelperTest, NoDownloadPageLaterForNonHttpSchemes1) {
NoDownloadPageLaterForNonHttpSchemes("file:///blah/blah", false);
}
TEST_F(NetErrorTabHelperTest, NoDownloadPageLaterForNonHttpSchemes2) {
NoDownloadPageLaterForNonHttpSchemes("chrome://blah/", false);
}
TEST_F(NetErrorTabHelperTest, NoDownloadPageLaterForNonHttpSchemes3) {
// about:blank always succeeds, and the test harness won't handle URLs that
// don't go to the network failing.
NoDownloadPageLaterForNonHttpSchemes("about:blank", true);
}
#endif // BUILDFLAG(ENABLE_OFFLINE_PAGES)
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